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4.4.5 MC output
Main (or line) contactor is operated through an open-drain PWM-voltage-
controlled output.
In order to utilize the built-in freewheeling diode, the coil must be supplied with
KEY voltage, pin
A nonstandard hardware configuration permits to utilize a built-in freewheeling
diode connected to pin PEB
In case the vehicle design does not allow usage of the built-in freewheeling
diode, i.e. if the return path integrity cannot be guaranteed in all situations, an
external one must be applied between the coil terminals.
Output features
PWM should only be used for inductive loads such as relays, contactors, motor
brakes or hydraulic valves.
PWM frequency can be changed by software. If a different PWM frequency has
to be used, it is suggested to discuss it with Zapi technicians.
Protection
Protected against inductive discharge with internal freewheeling diode to pin KEY
A3
(A1) and ESD protected by means of ESD-suppressing device. Protected
against reverse polarity of the battery.
Built-in diagnostics:
-
Overcurrent
-
Driver shorted
-
Driver open
-
Coil open
Refer to chapter 10 for more detailed description.
MC output can only be a PWM-voltage-controlled output. It cannot be used as a
current-controlled output.
When driving an inductive load on PWM open-drain output, there must
always be a path for the current through a freewheeling diode. Do not
connect any switch or fuse in series with the diode.
AFNZPxxx– DUALACE2 NEW GENERATION – User Manual
A3
(A1), see chapter 3.2
Up to 1 Arms continuous current (holding).
Up to 2 A peak (pulling) current for a maximum of 200 ms.
Individual hardware for detection of: shorted driver, open driver, open coil.
1 kHz default PWM frequency.
Configurable output voltage, by means of separate parameters for pulling
and holding stages.
A27
(A17).
Page 43/169
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Troubleshooting
Need help?
Do you have a question about the DUALACE2 NEW GENERATION and is the answer not in the manual?
Questions and answers
Como comprobar el funcionamiento del controlador dualac2 sin display
You can check the operation of the Zapi DUALACE2 NEW GENERATION controller without a display using the following methods:
1. Zapi Smart Console – Connect the Zapi Smart Console to the CAN bus to access diagnostics and parameter settings.
2. PC CAN Console – Use the PC CAN Console software to monitor and adjust controller settings.
3. Self-Diagnosis Feature – The controller performs self-diagnosis, and faults can be displayed using Zapi tools.
4. Alarm History Log – Check the log of alarms to review past faults and system behavior.
5. TESTER Function – Use the TESTER function to monitor key operational readouts.
These methods allow you to diagnose and verify the controller’s operation without an external display.
This answer is automatically generated
A brumby electrical truck that has a zapi inv.dace2, records the failure 244 "Warning Slave It depends on the supervisor uc", and the alarm 248 "Mc is Opened, eb is applied". On the other hand, the LED does not turn on, but in the manual I did not find the LED code. I would like more certainty about whether the failure is from the controller and the LED code for this Zapi model.
Failure 244 "Warning Slave" depends on the supervisor microcontroller (µC). No specific effect or troubleshooting steps are provided in the available context.
Alarm 248 "MC is Opened, EB is Applied" indicates that the main contactor (MC) is open, and the electric brake (EB) is applied. This typically occurs during start-up, standby, or other system states.
The LED code for this model is not explicitly provided in the available context.
This answer is automatically generated